We are going to calculate the standard deviation for the following set of sample data. 5 14 9 14 2 1) Calculate the mean. I = 2) Fill in the table below: Fill in the differences of each data value from the mean, then the squared differences. C - I (c - )2 5 14 9 14 2 3) Calculate the sample standard deviation ($). 8 = n - 1 (Please round your answer to two decimal places) Note: n is the sample size or the number of data value in the sample. Submit QuestionThe ages of Dion's five cousins are listed below. 18 13 9 19 20 1) Calculate the mean. H = differences. 2) Fill in the table below: Fill in the differences of each data value from the mean, then the squared I - H 18 13 19 20 3) Calculate the population standard deviation (o). 0 = E(x - 1)2 N Please round your answer to two decimal places)In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High School Mean Test Score Number of ninth graders (Frequency) Glenwood 76 261 Central 93 327 Lincoln 73 152 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was the average of 76, 93, and 73, which is 80.7. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place. Mean of all ninth grader's scores = Hint: Textbook Measures of CenterTo compute a student's Grade Point Average (GPA) for a term, the student's grades for each course are weighted by the number of credits for the course. Suppose a student had these grades: 3.9 in a 5 credit Math course 2.5 in a 2 credit Music course 2.6 in a 5 credit Chemistry course 2.8 in a 6 credit Journalism course What is the student's GPA for that term? Round to two decimal places. Student's GPA =